Anti-Corrosion Treatment

Corrosion including rust is a worldwide problem that is gaining more and more attention. With aging infrastructures, the risk is mounting and threatens lives and property. Air-conditioner heat exchangers coil are made of aluminium fins and are more susceptible to hostile environments and contaminants that can corrode the fins, causes it to fall off and degrade the performance and increase power consumption, in worse cases it may lead to compressor failure.

Too often problems are ignored until it’s too late, like the below cases:

An important factor is that corrosion is IRREVERSIBLE, and it always results in a weakened structure. There are 2 solutions:

​​​​​PREVENTION works going forward to maintain the equipment standard quality.

REPAIR works is the most pressing issue, time consuming and affected the equipment standard quality.

Corrosion is the deterioration of surfaces and structures caused by a reaction to several elements and environment conditions:

Coastal Environment

Mild Chemical Environment

Daikin Anti-corrosion Treatment forms a protective barrier to prolong the air-conditioner fins heat exchanger coil lifespan and make the system work at it best optimum performance.

Heat Exchanger Assy without Anti-Corrosion Treatment

Heat Exchanger Assy with Anti-Corrosion Treatment

TYPES OF ANTI-CORROSION TREATMENT

Anti-Corrosion Treatment Type

Environment

Coating Type

Coating Color

Suitable

Location

Equipment Type

Basic

Non-Coastal

Polyurethane

Executive Grey

Indoor

Fan Coil Unit

Coastal

Basic Lite

Non-Coastal

Epoxy

Red Oxide

Indoor

Fan Coil Unit

Heavy

Non-Coastal

Polyurethane

Executive Grey

Outdoor

Condensing Unit

Coastal

Air-Cooled Chiller

Mild Chemical

Self-Contained Unit

Heavy Plus

Coastal

Enamel

Ocean Green

Outdoor

Condensing Unit

Mild Chemical

Air-Cooled Chiller

On Board Ship

Self-Contained Unit

ANTI-CORROSION TREATMENT FACILITY (OPERATION)

Daikin Singapore (DSP) has full facility process to locally performed anti-corrosion treatment work, spray booth features come complete with built in oven, to ensure coating treatment is baked in accordance to our work standard quality and the equipment with coating treatment performance maintained at the optimum level without compromise.

Spray Booth

Spray Coating Work Process

Under Coat

Top Coat

Assembly Work Process

COATING MATERIAL SPECIFICATION

Anti-Corrosion Treatment Type

Components

Basic

Basic Lite

Heavy

Heavy Plus

Heat Exchanger Fins Assembly

Condenser Coil

Evaporator Coil

Base coat + Top coat (≥50µ)

Base coat (≥20µ)

Base coat + Top coat (≥50μ)

Base coat + Top coat (≥50μ)

Bottom Frame Assembly

Mounting Plate Assembly

Partition Plate Assembly

N.A.

N.A.

Base coat + Top coat (≥50μ)

Base coat + Top coat (≥50μ)

Self Tapping Screws**

N.A.

N.A.

SUS410 Stainless Steel Screws

SUS410 Stainless Steel Screws

Coating Materials

Active Primer

Epoxy

Active Primer

Active Primer

Polyurethane

Polyurethane

Enamel

Colour

Executive Grey

Red Oxide

Executive Grey

Ocean Green

Suitable Location

Indoor

Outdoor

Applicable Equipment

VRV – Variable Refrigerant Volume Control

Condensing Unit

Wall Mounted Unit

Ceiling Cassette Unit

Ceiling Concealed Unit

RA – Residential Air

Condensing Unit

Wall Mounted Unit

Ceiling Cassette Unit

Ceiling Concealed Unit

SA – Sky Air Unit

Condensing Unit

Wall Mounted Unit

Ceiling Cassette Unit

Ceiling Concealed Unit

PA – Package Unit

Condensing Unit

Rooftop Self Contained Unit

Floor Standing Unit

Ceiling Concealed Unit

AP – Applied

Air Cooled Chiller

AHU Coil

N.A. – Not Applicable
**Replace to SUS410 Stainless Steel Screws

BENEFITS OF ANTI-CORROSION TREATMENT

✔ Cost Saving

Reduced operation down time

Maintained optimum energy

✔ Flexible and Durable

Coating materials easy to use & handle

Tough coating materials

✔ Superior Corrosion Protection

Able to withstand coastal and mild chemical industrial environment

✔ Performance Unchanged

With anti-corrosion treatment CU performance is unchanged and negligible